EP 0995193 A2 20000426 - SEMI-MANUFACTURED STAMPER AND METHOD OF MANUFACTURING THE SAME
Title (en)
SEMI-MANUFACTURED STAMPER AND METHOD OF MANUFACTURING THE SAME
Title (de)
HALFERTIGSTEMPEL UND VERFAHREN ZU DESSEN HERSTELLUNG
Title (fr)
MATRICE DE PRESSAGE ET PROCEDE DE PRODUCTION DE CETTE MATRICE
Publication
Application
Priority
- SE 9801387 W 19980715
- SE 9702734 A 19970716
- SE 9703480 A 19970925
Abstract (en)
[origin: WO9904393A2] The invention relates to a stamper for replication of optical discs and to a method of obtaining such a stamper. The method comprises the steps of: a) obtaining a substantially disc-shaped member (100) having a first surface (105; 106); and a second surface (112) forming a back surface of the semi-manufactured stamper; said first surface being provided with a guide track (6; 6') for indicating structurable surface portions (106') of said member (100; 130); said structurable surface portions (106') being flat and substantially unstructured; b) applying a layer (120; 240;) sensitive to irradiation on said first surface (105) such that an unexposed and exposable semi-manufactured stamper is provided; c) enclosing the unexposed semi-manufactured stamper in a protective package such that the sensitive film is maintained substantially unexposed; and d) treating (S30) the semi-manufactured stamper, before performing step c), said treatment including: d1) treating said second surface (112) of the semi-manufactured stamper such that a mean surface deviation value (Rz) below (2) micrometer is obtained.
IPC 1-7
IPC 8 full level
G11B 7/26 (2006.01)
CPC (source: EP)
G11B 7/26 (2013.01); G11B 7/261 (2013.01)
Citation (search report)
See references of WO 9904393A2
Designated contracting state (EPC)
CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
WO 9904393 A2 19990128; WO 9904393 A3 19990422; WO 9904393 B1 19990527; AU 8370098 A 19990210; CN 1264487 A 20000823; DE 69811896 D1 20030410; EP 0995193 A2 20000426; EP 0995193 B1 20030305; SE 9703480 D0 19970925
DOCDB simple family (application)
SE 9801387 W 19980715; AU 8370098 A 19980715; CN 98807258 A 19980715; DE 69811896 T 19980715; EP 98934101 A 19980715; SE 9703480 A 19970925